Men Pass DNA to Women While Kissing, Comenius University Study 1/28/2013 7:25:15 AM

SO ROMANTIC... when you kiss your partner passionately, not only do you exchange bacteria and mucus, you also impart some of your genetic code. No matter how fleeting the encounter, the DNA will hang around in their mouth for at least an hour. This means that women's saliva could contain evidence of unwanted attention in cases of assault, or even telltale signs of infidelity.